system: return ubus error when sysupgrade_exec_upgraded() has failed
[project/procd.git] / rcS.c
1 /*
2 * runqueue-example.c
3 *
4 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <libubox/uloop.h>
20 #include <libubox/runqueue.h>
21 #include <stdlib.h>
22 #include <stdio.h>
23 #include <unistd.h>
24
25 #include <sys/types.h>
26 #include <sys/stat.h>
27 #include <fcntl.h>
28 #include <glob.h>
29
30 #include <libubox/ustream.h>
31
32 #include "procd.h"
33 #include "rcS.h"
34
35 static struct runqueue q, r;
36
37 struct initd {
38 struct ustream_fd fd;
39 struct runqueue_process proc;
40 char *file;
41 char *param;
42 };
43
44 static void pipe_cb(struct ustream *s, int bytes)
45 {
46 struct initd *initd = container_of(s, struct initd, fd.stream);
47 char *newline, *str;
48 int len;
49
50 do {
51 str = ustream_get_read_buf(s, NULL);
52 if (!str)
53 break;
54 newline = strchr(str, '\n');
55 if (!newline)
56 break;
57 *newline = 0;
58 len = newline + 1 - str;
59 ULOG_NOTE("%s: %s", initd->file, str);
60 #ifdef SHOW_BOOT_ON_CONSOLE
61 fprintf(stderr, "%s: %s\n", initd->file, str);
62 #endif
63 ustream_consume(s, len);
64 } while (1);
65 }
66
67 static void q_initd_run(struct runqueue *q, struct runqueue_task *t)
68 {
69 struct initd *s = container_of(t, struct initd, proc.task);
70 int pipefd[2];
71 pid_t pid;
72
73 DEBUG(2, "start %s %s \n", s->file, s->param);
74 if (pipe(pipefd) == -1) {
75 ERROR("Failed to create pipe\n");
76 return;
77 }
78
79 pid = fork();
80 if (pid < 0)
81 return;
82
83 if (pid) {
84 close(pipefd[1]);
85 s->fd.stream.string_data = true,
86 s->fd.stream.notify_read = pipe_cb,
87 runqueue_process_add(q, &s->proc, pid);
88 ustream_fd_init(&s->fd, pipefd[0]);
89 return;
90 }
91 close(pipefd[0]);
92
93 int devnull = open("/dev/null", O_RDONLY);
94 dup2(devnull, STDIN_FILENO);
95 dup2(pipefd[1], STDOUT_FILENO);
96 dup2(pipefd[1], STDERR_FILENO);
97
98 if (devnull > STDERR_FILENO)
99 close(devnull);
100
101 execlp(s->file, s->file, s->param, NULL);
102 exit(1);
103 }
104
105 static void q_initd_complete(struct runqueue *q, struct runqueue_task *p)
106 {
107 struct initd *s = container_of(p, struct initd, proc.task);
108
109 DEBUG(2, "stop %s %s \n", s->file, s->param);
110 ustream_free(&s->fd.stream);
111 close(s->fd.fd.fd);
112 free(s);
113 }
114
115 static void add_initd(struct runqueue *q, char *file, char *param)
116 {
117 static const struct runqueue_task_type initd_type = {
118 .run = q_initd_run,
119 .cancel = runqueue_process_cancel_cb,
120 .kill = runqueue_process_kill_cb,
121 };
122 struct initd *s;
123 char *p, *f;
124
125 s = calloc_a(sizeof(*s), &f, strlen(file) + 1, &p, strlen(param) + 1);
126 if (!s) {
127 ERROR("Out of memory in %s.\n", file);
128 return;
129 }
130 s->proc.task.type = &initd_type;
131 s->proc.task.complete = q_initd_complete;
132 if (!strcmp(param, "stop") || !strcmp(param, "shutdown")) {
133 s->proc.task.run_timeout = 15000;
134 s->proc.task.cancel_timeout = 10000;
135 }
136 s->param = p;
137 s->file = f;
138 strcpy(s->param, param);
139 strcpy(s->file, file);
140 runqueue_task_add(q, &s->proc.task, false);
141 }
142
143 static int _rc(struct runqueue *q, char *path, const char *file, char *pattern, char *param)
144 {
145 char *dir = alloca(2 + strlen(path) + strlen(file) + strlen(pattern));
146 glob_t gl;
147 int j;
148
149 if (!dir) {
150 ERROR("Out of memory in %s.\n", file);
151 return -1;
152 }
153
154 DEBUG(2, "running %s/%s%s %s\n", path, file, pattern, param);
155 sprintf(dir, "%s/%s%s", path, file, pattern);
156 if (glob(dir, GLOB_NOESCAPE | GLOB_MARK, NULL, &gl)) {
157 DEBUG(2, "glob failed on %s\n", dir);
158 return -1;
159 }
160
161 for (j = 0; j < gl.gl_pathc; j++)
162 add_initd(q, gl.gl_pathv[j], param);
163
164 globfree(&gl);
165
166 return 0;
167 }
168
169 int rcS(char *pattern, char *param, void (*q_empty)(struct runqueue *))
170 {
171 runqueue_init(&q);
172 q.empty_cb = q_empty;
173 q.max_running_tasks = 1;
174
175 return _rc(&q, "/etc/rc.d", pattern, "*", param);
176 }
177
178 int rc(const char *file, char *param)
179 {
180 return _rc(&r, "/etc/init.d", file, "", param);
181 }
182
183 static void r_empty(struct runqueue *q)
184 {
185
186 }
187
188 static void __attribute__((constructor)) rc_init() {
189 runqueue_init(&r);
190 r.empty_cb = r_empty;
191 r.max_running_tasks = 8;
192 }